MJ2501 Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -80 V
• Collector-Base Voltage, max: -80 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -10 A
• Collector Dissipation: 150 W
• DC Current Gain (h_fe): 1000
• Operating and Storage Junction Temperature Range: -65 to +200 °C
• Package: TO-3

Here is an image showing the pin diagram of this transistor.The complementary NPN transistor to the MJ2501 is the MJ3001.You can replace the MJ2501 with the 2N6650, BDX64A, BDX64B, BDX64C, BDX66A, BDX66B, BDX66C, BDX68A, BDX68B, BDX68C, MJ11013, MJ11013G, MJ11015, MJ11015G, MJ11031, MJ11031G, MJ11033, MJ11033G, MJ4031, MJ4032, TIP606, TIP607, TIP646 or TIP647.